The thing I hate most about Kickstarter is that there isn't a way to show what is actually being paid for. It's not $15 for a deck, the MSRP on our decks is $9.99. The $15 is for the deck production, and artwork, and shipping, and Amazon fees, and Kickstarter fees, and licensing fees.
We use Kickstarter to help offset our overall costs, as it obviously costs much more than $10,000 to produce even a run of 2500 decks. It also helps us demonstrate that there is interest and a market for particular IPs when selling to retailers and distributors.
For those that do well, we continue selling them. For those that don't, we sell off what we have and move on.